Field manual of trees : including southern Canada and the northern United States to the southern boundary of Virginia, Kentucky and Missouri, westward to the limits of the prairie / by John H. Schaffner

Field manual of trees; including southern Canada and the northern United States to the southern boundary of Virginia, Kentucky, and Missouri, westward to the limits of the prairie

Catalog of Ohio vascular plants : arranged according to the phyletic classification : with notes on the geographical distribution in the state, based mainly on specimens in the State Herbarium, Botanical Laboratory, the Ohio State University

The grasses of Ohio

Trees of Ohio and surrounding territory, including the area westward to the limits of the prairie and south to the thirty seventh parallel